A hybrid produces what it does. If you cross two stable non-hybrids, the seeds in the fruit that develop are all the same and produce the hybrid variety. So Patrina crossed Golden Dwarf Champion with Green Giant and got the F1 she named Sneezy. All of the seeds in the fruit that she harvested that was the result of the cross produce the hybrid, which was a medium sized yellow tomato. Any time she makes that cross and a fruit develops, the seeds in the fruit are Sneezy, the hybrid. So what a hybridizer does is to make lots of crosses, save seeds from the developed fruit, grow it out and if it is excellent, gives it a name. The cross is repeated and the seeds from the ripe fruit saved and sent out as the hybrid seed. So, yes, to keep a hybrid on the market, the parent plants must be maintained and grown each time that the hybrid seed is needed.
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Craig
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